Upgraded photoacoustic CO2 sensor delivers accuracy and building standard compatibility

Sensirion has announced the upcoming launch of SCD43, its latest Photoacoustic NDIR CO2 sensor. The sensor is compatible with ASHRAE 62.1 Draft Addendum d and will be available to customers in the summer of 2025.

The sensor is a drop-in upgrade based on the company's market-proven SCD4x platform. The sensor will provide customers with a compact, high-accuracy CO2 sensor that fulfils the demands of the most stringent building standards. This includes the requirements of the current draft of Addendum d to the American ASHRAE 62.1 standard for demand-controlled ventilation (DCV) systems.

The sensor is the result of many years of experience with and continued research and development endeavours into the SCD4x Photoacoustic NDIR CO2 sensor platform. Refined manufacturing and calibration processes deliver a sensor specified to the industry's 'best-in-class' measurement accuracy of +-(30ppm + 3% m.v.).

The SCD43 is offered in a compact form factor of 10.1mm x 10.1mm x 6.5mm and is SMD solderable.